Hello, @Mike,
Thank you for selecting and using our theme and for reaching out to us.
As you mentioned that you have imported the product images separately, this could be the cause of the issue. It appears that the images are not properly linked to the products and have not been assigned correctly. We suggest that you edit one of your products and manually assign the gallery images to it again, save it, and then clear the browser cache to check the site again.
If this resolves the issue, then it will be confirmed that the issue is due to the imported product images and you will need to reassign/reset them manually for them to work properly.
Best Regards,
8Theme’s Team